Browse > Article
http://dx.doi.org/10.11112/jksmi.2012.16.2.040

Non Destructive Technique for Steel Corrosion Detection Using Heat Induction and IR Thermography  

Kwon, Seung Jun (한남대학교 건설시스템 공학과)
Park, Sang Soon (상명대학교 건설시스템 공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.16, no.2, 2012 , pp. 40-48 More about this Journal
Abstract
Steel corrosion in concrete is a main cause of deterioration and early failure of concrete structures. A novel integration of electromagnetic heat induction and infrared (IR) thermography is proposed for nondestructive detection of steel corrosion in concrete, by taking advantage of the difference in thermal characteristics of corroded and non-corroded steel. This paper focuses on experimental investigation of the concept. An inductive heater is developed to remotely heat the embedded steel from concrete surface, which is integrated with an IR camera. Concrete samples with different cover depths are prepared. Each sample is embedded with a single rebar in the middle, resulting an identical cover depth from the front and the back surfaces, which enable heat induction from one surface and IR imaging from the other simultaneously. The impressed current (IC) method is adopted to induce accelerated corrosion on the rebar. IR video images are recorded during the entire heating and cooling periods. The test results demonstrate a clear difference in thermal characteristics between corroded and non-corroded samples. The corroded sample shows higher rates of heating and cooling than those of the non-corroded sample. This study demonstrates a potential for nondestructive detection of rebar corrosion in concrete.
Keywords
Concrete; Corrosion; Heat Induction; Impressed Current Method; IR Thremography; NDE;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 노영숙, 정란, 박현수, "디지털 화상정보를 이용한 매입철근의 부식률 예측 모델", 대한건축학회 논문집, vol. 24, No. 7, 2008, pp.77-84.
2 건설교통부, 콘크리트 구조물의 부식 및 공극감지를 위한 비파괴 시험기술 개발, 산학연 공동연구 개발사업 최종보고서, 한국건설교통기술 평가원, 2004, pp.1-64.
3 권성준, M. Q. Feng, "적외선 화상기법을 이용한 시멘트 모르타르 특성의 실험적 평가", 대한토목학회 논문, vol. 30-1A, 2010, pp.53-59.
4 송하원, 이창홍, 이근주, "부식저항성 평가에 따른 균열 콘크리트보의 부식전위 연구", 구조물진단학회지, 2009, vol. 13, No. 1, pp.97-105.
5 윤주형, 백인관, 조승호, 정란, "대기온도에 따른 적외선 열화상 처리기법을 이용한 철근의 부식률 측정기법", 한국콘크리트학회 가을 학술발표회, 2006, pp.233-236.
6 조성형, 임영철, Mohamed Ismail, 이한승, "비파괴 철근부식 진단을 위한 매립형 미니센서 개발에 관한 기초적 연구", 구조물진단학회지, vol. 14, No. 6, 2010, pp.179-187.
7 American Society for Testing Materials, Standard Test Method for Half-Cell Potentials of Uncoated Reinforcing Steel in Concrete, ASTM C876-91, 1999, pp.1-12.
8 Andrade, C., Alonso, C., "Corrosion Rate Monitoring in the Laboratory and On Site", Construction Building Materials, vol. 10, No. 5, 1996, pp.315-328.   DOI   ScienceOn
9 Broomfield J. P., Corrosion of Steel in Concrete: Understanding, Investigation and Repair. London: E&FN 1997, 56-59.
10 Clemena, G. G., McKeel, W. T., Detection of Delamination in Bridge Decks with Infrared Thermography, Transportation Research Record No. 664, 1978, pp.25-85.
11 Hillemeier, B., "Location of Reinforcement by Induction- Thermography", Thermal Infrared Sensing for Diagnostics and Control (Thermosense VII), SPIE Proceedings, vol. 520, 1985, pp.197.
12 Kwon, S.-J., Na, U. J., Park, S.-S., Jung, S. H., "Service Life Prediction of Concrete Wharves with Early-Aged Crack : Probabilistic Approach for Chloride Diffusion", Structural Safety, vol. 31, No. 1, 2009, pp.75-83.   DOI   ScienceOn
13 Maierhofer, C. H., Arndt, R., Rllig, M., Rieck, C., Walther, A., Scheel, H., Hillemeier, B., "Application of Impulse- Thermography for Nondestructive Assessment of Concrete Structures", Cement and Concrete Composites, vol. 28, No. 4, 2006, pp.393-401.   DOI   ScienceOn
14 Song, H.-W., Pack, S.-W., Lee, C.-H., Kwon, S.-J., "Service Life Prediction of Concrete Structures under Marine Environment Considering Coupled Deterioration", J. of Restoration of Buildings and Monuments, vol. 12, No. 4, 2006, 265-284.
15 Morris, W., Vico, A., Vazquez, M., Sanchez, S. R., "Corrosion of Reinforcing Steel Evaluated by Means of Concrete Resistivity Measurements", Corrosion Science, vol. 44, 2002, pp.81-99.   DOI   ScienceOn
16 Sakurada, S., Irie H., Yoshida Y., "Development of Reinforced Concrete Corrosion Amount Presumption Method by Ultrasonic Method", 17th World Conference on Nondestructive Testing, Shanghai, China, 2008, pp.1-6.
17 Song, H.-W., Kwon, S.-J., "Evaluation of Chloride Penetration in High Performance Concrete using Neural Network Algorithm and Micro Pore Structure", Cement and Concrete Research, vol. 39, No. 9, 2009, pp.814-824.   DOI   ScienceOn
18 Spicer, J. W. M., Osiander, R., Aamodt, L. C., Givens, R. B., "Microwave Thermoreflectometry for Detection of Rebar Corrosion", Structural Materials Technology III: An NDT Conference, San Antonio, TX, SPIE: pp.402-409.